Drill bit with hole blocking prevention function

Abstract

The utility model belongs to the technical field of drill bits, particularly relates to a drill bit with a hole clamping prevention function, and aims to solve the problems that some rock fragments cannot be timely discharged in a drill hole during drilling, the drill bit is easily clamped during drill lifting, and construction is affected in the prior art. A drill bit body is fixed to one end of the drill bit fixing handle, a flushing mechanism used for flushing out sweeps is arranged on the outer surface of the drill bit fixing handle, and a flow limiting mechanism used for limiting flow of the flushing mechanism is arranged in the drill bit fixing handle. The flushing mechanism comprises a mounting shell, the outer surface of the drill bit fixing handle is sleeved with the mounting shell, and the outer surface of the mounting shell communicates with a water inlet pipe. According to the drill bit, clean water enters the drill bit body and is discharged from the inside of the drill bit body to the outside, so that chippings generated during drilling can be flushed out, and the chippings can be better discharged through the chipping discharging groove under the action of water flow.

Description

Technical Field

[0001] The utility model relates to a drill bit, in particular to a drill bit with an anti-stuck hole function, belonging to the technical field of drill bits. Background Art

[0002] A drill bit is a tool mounted on the front end of a drill rod and used to create through or blind holes in solid materials, as well as to expand existing holes. Drilling and blasting in mines are performed using a drill rig. The drill bits used in these rigs come in various styles, but all feature alloy cutting edges on the end face to impact or cut rock.

[0003] In the prior art, the casing PDC drill bit disclosed in Publication No. CN221299084U includes a joint, a drill bit body, a U-shaped groove, a first composite piece, a second composite piece, a third composite piece, and a fourth composite piece. The drill bit body is fixedly mounted on the upper portion of the joint, and a plurality of U-shaped grooves are disposed on the top of the drill bit body. A plurality of first composite pieces are disposed on the U-shaped grooves. The drill bit body includes a crown and a gauge. The crown is disposed at the upper end of the gauge, a second composite piece is disposed on the outer surface of the crown, a third composite piece is disposed on the outer surface of the gauge, and a plurality of undercut teeth are disposed at the end of the gauge. The PDC drill bit is installed at the front end of the casing through the casing. When the casing encounters resistance, the casing drives the drill bit to rotate, thereby achieving the purpose of breaking rock, thereby eliminating obstacles and completing the casing operation safely and efficiently.

[0004] The PDC drill bit is a very powerful anti-drilling drill that is very effective in reducing rock spills and lowering rock mass, but it is not as effective as the PDC drill bit itself. Utility Model Content

[0005] The utility model provides a drill bit with an anti-stuck hole function to solve the problem that some rock fragments cannot be discharged in time in the drill hole during drilling, and the drill bit is easily stuck when the drill is lifted, thus affecting construction.

[0006] The utility model achieves the above-mentioned object through the following technical solutions: a drill bit with an anti-stuck hole function, comprising a drill bit fixing handle, one end of which is fixed with a drill bit body, an outer surface of the drill bit fixing handle is provided with a flushing mechanism for flushing out waste chips, and an interior of the drill bit fixing handle is provided with a flow limiting mechanism for limiting the flow of the flushing mechanism;

[0007] The flushing mechanism includes a mounting shell, which is sleeved on the outer surface of the drill bit fixing handle. The outer surface of the mounting shell is connected to a water inlet pipe. The outer wall of the drill bit fixing handle is provided with a through hole connected to the mounting shell. The interior of the drill bit fixing handle is provided with a flow cavity connected to the through hole.

[0008] As a further solution of the present invention, a plurality of chip removal grooves are provided on the outer surface of the drill body.

[0009] As a further solution of the present invention: two fixed bearings sleeved on the drill bit fixing handle are fixed to the inner wall of the mounting shell, and a sealing ring sleeved on the drill bit fixing handle is fixed to the side wall of the fixed bearing.

[0010] As a further solution of the present invention: the inner wall of the drill body is coated with a wear-resistant coating.

[0011] As a further solution of the present invention: the flow limiting mechanism includes a fixing plate, the fixing plate is fixed to the inner wall of the drill bit fixing handle, and a flow limiting hole is provided inside the fixing plate.

[0012] As a further solution of the present invention: two movable rods are passed through the inner wall of the fixed plate, and one end of the two movable rods is fixed with a current limiting plate.

[0013] As a further solution of the present invention: the outer surfaces of the two movable rods are sleeved with springs that are abutted and connected to the fixed plate, and one end of the spring is abutted and connected to a fixed block that is fixedly connected to the movable rod.

[0014] The beneficial effects of the present invention are as follows: clean water enters the drill bit body and is discharged from the inside of the drill bit body to the outside, so that the debris generated during drilling can be flushed out, and under the action of the water flow, the debris can be better discharged through the chip discharge groove; the provided sealing ring can play a sealing role, and the wear-resistant coating coated on the surface of the drill bit body can improve the wear resistance effect. When flushing is not needed, the water pressure of the water flow is reduced, and under the action of the spring itself, the fixed block is pushed to move, and then the movable rod drives the flow limiting plate to reset, which can effectively reduce the external debris from entering the interior. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the drill bit fixing handle of the utility model;

[0017] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4This is a schematic diagram of the three-dimensional structure of the drill bit body of the present invention.

[0019] In the figure: 1. Drill bit fixing handle; 2. Drill bit body; 3. Mounting shell; 31. Water inlet pipe; 32. Through hole; 33. Flow chamber; 4. Chip groove; 5. Fixed bearing; 6. Sealing ring; 7. Wear-resistant coating; 8. Fixed plate; 81. Flow limiting hole; 82. Movable rod; 83. Flow limiting plate; 84. Spring; 85. Fixed block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0021] like Figures 1 to 4 As shown, a drill bit with an anti-stuck hole function includes a drill bit fixing handle 1, one end of which is fixed with a drill body 2, an outer surface of the drill bit fixing handle 1 is provided with a flushing mechanism for flushing out waste chips, and an interior of the drill bit fixing handle 1 is provided with a flow limiting mechanism for limiting the flow of the flushing mechanism;

[0022] The flushing mechanism includes a mounting shell 3, which is sleeved on the outer surface of the drill bit fixing handle 1. The outer surface of the mounting shell 3 is connected to a water inlet pipe 31. The outer wall of the drill bit fixing handle 1 is provided with a through hole 32 that is interconnected with the mounting shell 3. The interior of the drill bit fixing handle 1 is provided with a flow cavity 33 that is interconnected with the through hole 32. The outer surface of the drill body 2 is provided with a plurality of chip removal grooves 4. The inner wall of the mounting shell 3 is fixed with two fixed bearings 5 sleeved on the drill bit fixing handle 1. The side wall of the fixed bearing 5 is fixed with a sealing ring 6 sleeved on the drill bit fixing handle 1. The driving device drives the drill bit fixing handle 1 to rotate, thereby driving the drill body 2 to rotate. When drilling a hole in the rock, the debris generated during drilling can be discharged to the outside through the chip discharge groove 4 on the drill bit body 2. At the same time, the water pipe transports clean water to the mounting shell 3 through the water inlet pipe 31, and then enters the flow chamber 33 through the through hole 32. At this time, the clean water will push the flow limiting plate 83 to move under the action of water pressure, so that the flow limiting plate 83 and the flow limiting hole 81 on the fixed plate 8 are separated, and the flow restriction of the flow limiting hole 81 is released. At this time, the clean water enters the drill bit body 2 and is discharged from the inside of the drill bit body 2 to the outside, which can flush out the debris generated during drilling, and under the action of the water flow, the debris can be better discharged through the chip discharge groove 4. Example 2

[0023] In addition to all the technical features of the first embodiment, this embodiment further includes: the inner wall of the drill body 2 is coated with a wear-resistant coating 7; the flow limiting mechanism includes a fixed plate 8, which is fixed to the inner wall of the drill fixing shank 1; a flow limiting hole 81 is defined in the fixed plate 8; two movable rods 82 are passed through the inner wall of the fixed plate 8; one end of each movable rod 82 is fixed to a flow limiting plate 83; the outer surfaces of the two movable rods 82 are sleeved with a spring 84 that is abutted and connected to the fixed plate 8; one end of the spring 84 is abutted and connected to a fixed block 85 fixedly connected to the movable rod 82; a fixed bearing 5 provided in the mounting shell 3 ensures that the mounting shell 3 does not rotate when the drill fixing shank 1 rotates, and the provided sealing ring 6 can provide a sealing effect; the wear-resistant coating 7 coated on the surface of the drill body 2 can improve the wear resistance; when flushing is not required, the water pressure is reduced, and the spring 84 itself pushes the fixed block 85 to move, thereby causing the movable rod 82 to drive the flow limiting plate 83 to reset, thereby effectively reducing the ingress of external debris into the interior.

[0024] Working principle: Before using the drill bit with anti-stuck hole function, first connect and fix one end of the drill bit fixing handle 1 to the driving device, and connect the water inlet pipe 31 provided on the mounting shell 3 to the external water pipe. When in use, the driving device drives the drill bit fixing handle 1 to rotate, and then drives the drill bit body 2 to rotate to drill holes in the rock. The debris generated during drilling can be discharged to the outside through the chip discharge groove 4 on the drill bit body 2. At the same time, the water pipe transports clean water into the mounting shell 3 through the water inlet pipe 31, and then enters the flow chamber 33 through the through hole 32. At this time, the clean water will push the flow limiting plate 83 to move under the action of water pressure, so that the flow limiting plate 83 and the flow limiting hole 81 on the fixing plate 8 are separated, releasing the flow limiting hole 81 is the flow limiter. At this time, clean water enters the drill body 2 and is discharged from the inside of the drill body 2 to the outside, which can flush out the debris generated during drilling. Under the action of the water flow, the debris can be better discharged through the chip groove 4. Through the fixed bearing 5 provided in the mounting shell 3, the drill fixing handle 1 will not drive the mounting shell 3 to rotate when it rotates, and the provided sealing ring 6 can play a sealing role. The wear-resistant coating 7 coated on the surface of the drill body 2 can improve the wear resistance. When flushing is not needed, the water pressure of the water flow is reduced, and under the action of the spring 84 itself, the fixed block 85 is pushed to move, and the movable rod 82 drives the flow limiter 83 to reset, which can effectively reduce the external debris from entering the interior.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0026] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A drill bit with an anti-stuck hole function, comprising a drill bit fixing handle (1), characterized in that: A drill body (2) is fixed to one end of the drill bit fixing handle (1), a flushing mechanism for flushing out waste chips is provided on the outer surface of the drill bit fixing handle (1), and a flow limiting mechanism for limiting the flow of the flushing mechanism is provided inside the drill bit fixing handle (1); The flushing mechanism comprises a mounting shell (3), the mounting shell (3) being sleeved on the outer surface of the drill bit fixing handle (1), the outer surface of the mounting shell (3) being connected to a water inlet pipe (31), the outer wall of the drill bit fixing handle (1) being provided with a through hole (32) communicating with the mounting shell (3), and the interior of the drill bit fixing handle (1) being provided with a flow cavity (33) communicating with the through hole (32).

2. The drill bit with anti-stuck hole function according to claim 1, characterized in that: The outer surface of the drill body (2) is provided with a plurality of chip removal grooves (4).

3. The drill bit with anti-stuck hole function according to claim 1, characterized in that: Two fixed bearings (5) sleeved on the drill bit fixing handle (1) are fixed to the inner wall of the mounting shell (3), and a sealing ring (6) sleeved on the drill bit fixing handle (1) is fixed to the side wall of the fixed bearing (5).

4. The drill bit with anti-stuck hole function according to claim 2, characterized in that: The inner wall of the drill bit body (2) is coated with a wear-resistant coating (7).

5. The drill bit with anti-stuck hole function according to claim 1, characterized in that: The flow limiting mechanism comprises a fixed plate (8), the fixed plate (8) being fixed to the inner wall of the drill bit fixing handle (1), and a flow limiting hole (81) being provided inside the fixed plate (8).

6. The drill bit with anti-stuck hole function according to claim 5, characterized in that: Two movable rods (82) are passed through the inner wall of the fixed plate (8), and a flow limiting plate (83) is fixed at one end of each of the two movable rods (82).

7. The drill bit with anti-stuck hole function according to claim 6, characterized in that: The outer surfaces of the two movable rods (82) are both sleeved with springs (84) that are abutted and connected to the fixed plate (8), and one end of the spring (84) is abutted and connected to a fixed block (85) that is fixedly connected to the movable rod (82).

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